... gate valve,Brass valves,1,Gate valve Body BRASS: CW614N, CuZn39Pb3, CW617N, CuZn40Pb2, DZR….FlashboardBrassBonnet & Stem, NutBrassGasket & ... DN50; Norminal Pressure: 2.0Mpa.Working medium: Water, Non-causticity liquid, Saturated steam.Working temperature: -20°C ... air. Specialized in development and production of Copper Valves, Gas Valves, Gate Valves, Ball Valve, Radiator Valve, Stop Valve, ...